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    • 12. 发明授权
    • Frequency modulated liquid crystal beamsteering device
    • 调频液晶射束装置
    • US06456419B1
    • 2002-09-24
    • US09675300
    • 2000-09-29
    • Bruce K. WinkerZhiming Zhuang
    • Bruce K. WinkerZhiming Zhuang
    • G02F101
    • G02B27/0087G02F1/1392G02F1/292
    • An electrical exciting circuit produces a plurality of oscillating electrical excitations, each at an independently controllable frequency. A set of drive electrodes are distributed in an array, and connected so that each receives a respective one of the excitations. A dual frequency liquid crystal (DFLC) material is arranged in the path of a coherent light beam and is disposed in proximity to the set of drive electrodes so as to receive electrical excitations. The DFLC has a dielectric coefficient which varies locally in relation to the frequency of the local electrical excitation received. The voltages and at least two frequencies of the excitations are controlled so as to produce a desired profile of the dielectric coefficient (for at least one polarization) and a corresponding optical phase delay profile for the coherent beam. Preferably, a novel reflective groundplane is included to improve optical reflective efficiency.
    • 电激励电路产生多个振荡电激励,每个以独立可控的频率产生。 一组驱动电极分布在阵列中,并且连接成使得每个驱动电极各自接收相应的一个激励。 双相液晶(DFLC)材料被布置在相干光束的路径中并且被布置在靠近该组驱动电极处以便接收电激励。 DFLC具有相对于所接收的局部电激励的频率局部变化的介电系数。 激励的电压和至少两个频率被控制以产生所需的介电系数分布(对于至少一个极化)和相干光束的对应的光学相位延迟分布。 优选地,包括新颖的反射接地面以提高光学反射效率。
    • 13. 发明授权
    • Current-driven emissive display addressing and fabrication scheme
    • 电流驱动的发射显示器寻址和制造方案
    • US06421033B1
    • 2002-07-16
    • US09527147
    • 2000-03-16
    • George M. WilliamsBruce K. WinkerZhiming Zhuang
    • George M. WilliamsBruce K. WinkerZhiming Zhuang
    • G09G320
    • G09G3/3233G09G3/2022G09G2300/0465G09G2300/0804G09G2300/0842G09G2310/0227G09G2310/0235H01L27/3244
    • An addressing scheme for use with current-driven emissive displays requires that an N-row by M-column array of pixels be divided into K segments of N/K rows each. One transistor-controlled current driver is provided for each column of pixels within a segment, and all of a segment's current drivers are connected to a respective gate address line. The array is addressed by dividing a frame time into N/K “sub-frame” times. During the first sub-frame time, the current drivers of each segment are turned on in sequence, and the first row of each segment addressed. The remaining rows are addressed in this manner during subsequent sub-frame times. The segmenting and addressing scheme reduces the duty ratio required to drive the array by a factor of K, and reduces the number of transistors required to drive the array by a factor of N/K, when compared with comparably-sized passive matrix and active matrix displays, respectively. Fabrication of the display, and other non-passive matrix displays, is simplified by placing all active components on the back side of the display panel, or on a separate printed-circuit board (PCB) which is interconnected with the pixel array via respective surface bonding pads to form a display. Fabrication is further simplified by combining the current drivers and other drive electronics into application-specific integrated circuits (ASICs).
    • 与电流驱动发射显示器一起使用的寻址方案要求将N行×M列像素阵列分别划分为N / K行的K个片段。 一个晶体管控制的电流驱动器被提供用于一段内的每列像素,并且一段的电流驱动器连接到相应的栅极地址线。 通过将帧时间除以N / K“子帧”次来寻址阵列。 在第一子帧时间期间,每个段的当前驱动器依次打开,并且每个段的第一行被寻址。 在随后的子帧时间内以这种方式寻址剩余的行。 与比较尺寸的无源矩阵和有源矩阵相比,分段和寻址方案将驱动阵列所需的占空比降低了K倍,并将驱动阵列所需的晶体管数量减少了N / K 显示。 通过将所有有源组件放置在显示面板的背面,或者通过相应表面与像素阵列互连的单独的印刷电路板(PCB)上来简化显示器和其它非无源矩阵显示器的制造 接合垫以形成显示器。 通过将当前驱动器和其他驱动电路组合到专用集成电路(ASIC)中,进一步简化了制作。
    • 16. 发明申请
    • OPTICAL ANGLE OF ARRIVAL MEASUREMENT SYSTEM AND METHOD
    • 光学测量系统和方法的光角
    • US20100230577A1
    • 2010-09-16
    • US12401027
    • 2009-03-10
    • JIAN MABruce K. Winker
    • JIAN MABruce K. Winker
    • H01L27/14
    • G01S3/783
    • An optical angle of arrival measurement system uses an optical element to form at least one narrow width line on a focal plane array (FPA) which is oblique with respect to the FPA's row and column axes and which traverses at least two rows or columns along its length; forming two perpendicular narrow width lines in a cross-pattern is preferred. Interpolating the position of the lines on the FPA provides coordinates that can be used to calculate the optical angle of arrival in accordance with θx=A(x)·tan−1(x/f), and θy=B(y)·tan−1(y/f), where f is the focal length of the optical element, and A(x) and B(y) are parameters that account for optical distortion and other imperfections of the system. The resolution δθ of the angle of arrival measurement can be improved to at least δθ˜(d/n)/f, where d is the FPA pixel width and n is the length in pixels of the imaged line.
    • 光学入射测量系统使用光学元件在焦平面阵列(FPA)上形成至少一条窄宽线,该焦平面阵列相对于FPA的行和列轴线是倾斜的,并且沿其沿着至少两行或多列 长度; 以交叉图案形成两条垂直的窄宽线是优选的。 插入FPA上的线的位置提供了可以用于根据&Thetas计算光学到达角度的坐标; x = A(x)·tan-1(x / f)和&het; y = B( y)·tan-1(y / f),其中f是光学元件的焦距,A(x)和B(y)是考虑系统的光学失真和其他缺陷的参数。 分辨率δ&thetas; (d / n)/ f,其中d是FPA像素宽度,n是成像线的像素长度。
    • 20. 发明授权
    • Liquid crystal adaptive coupler for steering a light beam relative to a light-receiving end of an optical waveguide
    • 用于相对于光波导的光接收端转向光束的液晶自适应耦合器
    • US06832028B2
    • 2004-12-14
    • US10267282
    • 2002-10-08
    • Dong-Feng GuDonald B. TaberBruce K. Winker
    • Dong-Feng GuDonald B. TaberBruce K. Winker
    • G02B626
    • G02F1/292G02B6/32G02B6/351G02B6/3556G02F1/1392
    • An apparatus for optically coupling a light source with a light-receiving end face of an optical waveguide comprises a lens for focusing a light beam emitted from the light source at a focal point on the light-receiving end face of the optical waveguide. An adaptive coupler, positioned in the optical path, is responsive to a beam steering control signal for steering and aligning the focal point relative to the light-receiving end face of the optical waveguide. In one form, the adaptive coupler comprises a pair of transparent substrates having confronting, parallel inner faces, the inner face of one of the pair of substrates carrying a beam intercepting, optically transparent, constant potential electrode and the inner face of the other of the pair of substrates carrying an electrically resistive, beam intercepting, optically transparent film. A pair of spaced apart electrodes in electrical contact with the film apply a linear voltage gradient along the film. An electro-optical phase shifting medium is disposed between the confronting inner faces of the substrates. The application of selected voltages to the electrodes creates a linear voltage gradient along the aforementioned film on the inner face of the one substrate resulting in a linearly varying electric field between that film and the constant potential electrode creating a corresponding linear variation in the refractive index of the liquid crystal medium and a linear wavefront tilt in the intercepting optical beam.
    • 用于将光源与光波导的光接收端面光学耦合的装置包括用于将从光源发射的光束聚焦在光波导的光接收端面上的焦点处的透镜。 位于光路中的自适应耦合器响应于光束转向控制信号,用于相对于光波导的光接收端面转向和对准焦点。 在一种形式中,自适应耦合器包括一对具有相对的平行内表面的透明基板,一对基板中的一个基板的内表面承载光束拦截,光学透明的恒定电位电极,另一个的内表面 一对基板承载电阻,光束截取的光学透明膜。 与膜电接触的一对间隔开的电极沿膜施加线性电压梯度。 电光相移介质设置在基板的相对的内表面之间。 将选择的电压施加到电极在一个衬底的内表面上沿着上述膜产生线性电压梯度,导致该膜和恒电位电极之间线性变化的电场产生相应的线性变化 液晶介质和截取光束中的线性波前倾斜。